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一个合作的骨干资源,用于地下进化的比较研究:世界Asellidae数据库
Nathanaelle Saclier1,2, Louis Duchemin1, Lara Konecny-Dupré1
1Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, Villeurbanne, France.
Molecular ecology resources
|October 21, 2023
概括
研究人员开发了新的工具和资源来研究淡水同类动物 (Asellidae),以了解地下水的进化. 他们发现,在地下水殖民后,男性的体型相对于女性的体型大小有所下降,这表明性选择.
科学领域:
- 进化生物学是进化的生物学.
- 生态生态学 生态生态学
- 基因组学就是基因组学.
背景情况:
- 在像地下水这样的新环境中研究表型进化是至关重要的,但由于资源限制,这是具有挑战性的.
- 关于地下水适应的跨种类比较研究很少,这阻碍了我们对进化过程的理解.
研究的目的:
- 创建可访问的工具和资源,研究淡水同类动物 (Asellidae) 过渡到地下水息地的演变.
- 为了促进从地表到地下过渡的大规模植物遗传学比较分析.
主要方法:
- 开发了世界虫类数据库 (WAD),包括物种发生情况,标本,DNA数据和元数据.
- 为Aselidae家族构建了一个大规模的,有日期的基因树.
- 确定了34种地表地下物种对,作为地下水殖民的复制品.
主要成果:
- 世界虫群数据库 (WAD) 为数千种物种,标本和DNA序列提供了一个公平的资源.
- 遗传学重建确定了在阿塞利代群中从表面到地下水环境的众多独立过渡.
- 在地下水殖民同类动物中,男性体型相对于女性体型显著减少.
结论:
- 世界水源与遗传学框架提供了前所未有的机会来研究阿塞利代的地下水适应.
- 遗传学控制的分析显示,在地下水殖民期间,性别特定的身体尺寸变化,可能是由性选择驱动的.
- 这些资源和发现为在新的环境压力下探索特征进化铺平了道路.
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